diff --git a/google/genai/_gaos/types/interactions/functionresultstep.py b/google/genai/_gaos/types/interactions/functionresultstep.py
index 3599ee57e..44065f005 100644
--- a/google/genai/_gaos/types/interactions/functionresultstep.py
+++ b/google/genai/_gaos/types/interactions/functionresultstep.py
@@ -42,14 +42,14 @@ class FunctionResultStepResult(BaseModel):
     "FunctionResultStepResultUnionParam",
     Union[FunctionResultStepResultParam, List[FunctionResultSubcontentParam], str],
 )
-r"""Required. The result of the tool call."""
+r"""The result of the tool call."""
 
 
 FunctionResultStepResultUnion = TypeAliasType(
     "FunctionResultStepResultUnion",
     Union[FunctionResultStepResult, List[FunctionResultSubcontent], str],
 )
-r"""Required. The result of the tool call."""
+r"""The result of the tool call."""
 
 
 class FunctionResultStepParam(TypedDict):
@@ -58,7 +58,7 @@ class FunctionResultStepParam(TypedDict):
     call_id: str
     r"""Required. ID to match the ID from the function call block."""
     result: FunctionResultStepResultUnionParam
-    r"""Required. The result of the tool call."""
+    r"""The result of the tool call."""
     is_error: NotRequired[bool]
     r"""Whether the tool call resulted in an error."""
     name: NotRequired[str]
@@ -73,7 +73,7 @@ class FunctionResultStep(BaseModel):
     r"""Required. ID to match the ID from the function call block."""
 
     result: FunctionResultStepResultUnion
-    r"""Required. The result of the tool call."""
+    r"""The result of the tool call."""
 
     is_error: Optional[bool] = None
     r"""Whether the tool call resulted in an error."""
diff --git a/google/genai/_gaos/types/interactions/mcpservertoolresultstep.py b/google/genai/_gaos/types/interactions/mcpservertoolresultstep.py
index c1cf9a6ab..3ab371a55 100644
--- a/google/genai/_gaos/types/interactions/mcpservertoolresultstep.py
+++ b/google/genai/_gaos/types/interactions/mcpservertoolresultstep.py
@@ -42,14 +42,14 @@ class MCPServerToolResultStepResult(BaseModel):
     "MCPServerToolResultStepResultUnionParam",
     Union[MCPServerToolResultStepResultParam, str, List[FunctionResultSubcontentParam]],
 )
-r"""Required. The output from the MCP server call. Can be simple text or rich content."""
+r"""The output from the MCP server call. Can be simple text or rich content."""
 
 
 MCPServerToolResultStepResultUnion = TypeAliasType(
     "MCPServerToolResultStepResultUnion",
     Union[MCPServerToolResultStepResult, str, List[FunctionResultSubcontent]],
 )
-r"""Required. The output from the MCP server call. Can be simple text or rich content."""
+r"""The output from the MCP server call. Can be simple text or rich content."""
 
 
 class MCPServerToolResultStepParam(TypedDict):
@@ -58,7 +58,7 @@ class MCPServerToolResultStepParam(TypedDict):
     call_id: str
     r"""Required. ID to match the ID from the function call block."""
     result: MCPServerToolResultStepResultUnionParam
-    r"""Required. The output from the MCP server call. Can be simple text or rich content."""
+    r"""The output from the MCP server call. Can be simple text or rich content."""
     name: NotRequired[str]
     r"""Name of the tool which is called for this specific tool call."""
     server_name: NotRequired[str]
@@ -73,7 +73,7 @@ class MCPServerToolResultStep(BaseModel):
     r"""Required. ID to match the ID from the function call block."""
 
     result: MCPServerToolResultStepResultUnion
-    r"""Required. The output from the MCP server call. Can be simple text or rich content."""
+    r"""The output from the MCP server call. Can be simple text or rich content."""
 
     name: Optional[str] = None
     r"""Name of the tool which is called for this specific tool call."""